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IT1263941B - NODULAR CAST IRON AND PROCEDURE FOR OBTAINING NODULAR CAST IRON - Google Patents

NODULAR CAST IRON AND PROCEDURE FOR OBTAINING NODULAR CAST IRON

Info

Publication number
IT1263941B
IT1263941B ITMI930305A ITMI930305A IT1263941B IT 1263941 B IT1263941 B IT 1263941B IT MI930305 A ITMI930305 A IT MI930305A IT MI930305 A ITMI930305 A IT MI930305A IT 1263941 B IT1263941 B IT 1263941B
Authority
IT
Italy
Prior art keywords
cast iron
nodular cast
bath
obtaining
particles
Prior art date
Application number
ITMI930305A
Other languages
Italian (it)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of ITMI930305A0 publication Critical patent/ITMI930305A0/en
Publication of ITMI930305A1 publication Critical patent/ITMI930305A1/en
Application granted granted Critical
Publication of IT1263941B publication Critical patent/IT1263941B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/08—Making cast-iron alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C1/00—Refining of pig-iron; Cast iron
    • C21C1/10—Making spheroidal graphite cast-iron
    • C21C1/105—Nodularising additive agents
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

Ghisa nodulare e procedimento per ottenere ghisa nodulare detta ghisa nodulare comprendendo: una matrice metallica bainitica, martensitica, perlitica o ferritica avente un grado di purezza di circa il 99,6% in cui i contenuti zolfo e fosforo sono mantenuti inferiori a 0,015% e 0,04% rispettivamente; da 10 a 12% in volume di particelle di grafite e da circa 0,2 a 1,2% in volume di particelle di carburo di elevata durezza del tipo Mc, dette particelle essendo disperse nella matrice metallica fusa, in cui M è almeno uno degli elementi scelti dal gruppo costituito da Ti, Ta. Zr, Hf, V e Nb.L'invenzione riguarda pure un procedimento per ottenere ghisa nodulare comprendente le fasi di: aggiungere ad un bagno di ghisa grigia contenente meno dello 0,015% di zolfo e meno dello 0,04% di fosforo, un carico tra circa 0,2 e 1,2% riferito al peso del bagno di almeno una ferrolega avente la formula Fe-FeM o Fe-MC, in cui M è almeno uno degli elementi scelto dal gruppo costituito da Ti, Ta, Zr, Hf, V e Nb; effettuare almeno una nodulizzazione del bagno mediante inoculazione di magnesio a basso tenore di ferrosilicio in esso; e scaricare il bagno metallico nodulizzato nello stampo.(Fig. 2)Nodular cast iron and process for obtaining nodular cast iron called nodular cast iron comprising: a bainitic, martensitic, pearlitic or ferritic metallic matrix having a degree of purity of about 99.6% in which the sulfur and phosphorus contents are kept lower than 0.015% and 0 , 04% respectively; from 10 to 12% by volume of graphite particles and from about 0.2 to 1.2% by volume of high hardness carbide particles of the type Mc, said particles being dispersed in the molten metal matrix, wherein M is at least one of the elements chosen by the group consisting of Ti, Ta. Zr, Hf, V and Nb. The invention also relates to a process for obtaining nodular cast iron comprising the steps of: adding to a gray cast iron bath containing less than 0.015% sulfur and less than 0.04% phosphorus, a load between about 0.2 and 1.2% referring to the weight of the bath of at least one ferroalloy having the formula Fe-FeM or Fe-MC, wherein M is at least one of the elements chosen from the group consisting of Ti, Ta, Zr, Hf , V and Nb; carrying out at least one bath nodulation by inoculation of low ferrosilicon magnesium content therein; and drain the nodulated metal bath into the mold. (Fig. 2)

ITMI930305A 1992-02-18 1993-02-18 NODULAR CAST IRON AND PROCEDURE FOR OBTAINING NODULAR CAST IRON IT1263941B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR929200615A BR9200615A (en) 1992-02-18 1992-02-18 NODULAR CAST IRON AND PROCESS OF OBTAINING NODULAR CAST IRON

Publications (3)

Publication Number Publication Date
ITMI930305A0 ITMI930305A0 (en) 1993-02-18
ITMI930305A1 ITMI930305A1 (en) 1994-08-18
IT1263941B true IT1263941B (en) 1996-09-05

Family

ID=4053739

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930305A IT1263941B (en) 1992-02-18 1993-02-18 NODULAR CAST IRON AND PROCEDURE FOR OBTAINING NODULAR CAST IRON

Country Status (4)

Country Link
BR (1) BR9200615A (en)
DE (1) DE4305027A1 (en)
GB (1) GB2265154A (en)
IT (1) IT1263941B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5824265A (en) * 1996-04-24 1998-10-20 J & L Fiber Services, Inc. Stainless steel alloy for pulp refiner plate
DE19728771C2 (en) * 1997-07-05 2000-11-02 Daimler Chrysler Ag Process for producing a high-carbon, niobium-alloyed gray cast iron alloy using an alloying aid
JP3936849B2 (en) * 2001-05-16 2007-06-27 スズキ株式会社 Ferrite-based spheroidal graphite cast iron and exhaust system parts using the same
ITMI20021670A1 (en) * 2002-07-26 2004-01-26 Erre Vis S P A SPHEROIDAL CAST IRON PARTICULARLY FOR THE REALIZATION OF ELASTIC SEALING SEGMENTS FOR INTERNAL COMBUSTION ENGINE PISTONS
DE102006024414B4 (en) * 2006-05-24 2011-01-13 Federal-Mogul Burscheid Gmbh Piston rings and cylinder liners
US7824605B2 (en) 2006-12-15 2010-11-02 Dexter Foundry, Inc. As-cast carbidic ductile iron
EP2003375B1 (en) * 2007-06-12 2011-04-20 Federal-Mogul Nürnberg GmbH Motor component and application of a cast iron alloy for a motor component
RU2410460C1 (en) * 2009-11-02 2011-01-27 Юлия Алексеевна Щепочкина Cast iron
CN105821284A (en) * 2016-03-28 2016-08-03 繁昌县天和机械有限公司 Method for preparing nanometer modified wear-resistant nodular cast iron
CN105821174A (en) * 2016-03-28 2016-08-03 繁昌县天和机械有限公司 Preparation method of nano-modified vanadium-nickel ductile cast iron
CN105821285A (en) * 2016-03-28 2016-08-03 繁昌县天和机械有限公司 Method for preparing nanometer modified vanadium-titanium nodular cast iron
CN105838841A (en) * 2016-03-28 2016-08-10 繁昌县天和机械有限公司 Preparation method of nano-metamorphic high-toughness vermicular graphite cast iron
USD937411S1 (en) 2019-08-30 2021-11-30 Fisher & Paykel Healthcare Limited Unit end connector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB697743A (en) * 1950-01-10 1953-09-30 Electric Furnace Prod Co Improvements in and relating to cast iron articles
GB904735A (en) * 1958-01-09 1962-08-29 B U Supplies & Machinery Compa Improvements in or relating to roller-type conveyors
US3600159A (en) * 1968-03-11 1971-08-17 William H Moore Nodular cast iron containing silicon and vanadium
DE2428822A1 (en) * 1974-06-14 1976-01-02 Goetzewerke SPHERICAL CAST IRON ALLOY WITH INCREASED WEAR RESISTANCE
FR2486100A1 (en) * 1980-07-01 1982-01-08 Creusot Loire MASSIVE SPHEROIDAL GRAPHITE CAST IRON
EP0241812B1 (en) * 1986-04-07 1993-09-08 General Electric Company Ferritic ductile cast iron for elevated temperature applications
US4830656A (en) * 1986-04-17 1989-05-16 Anciens Etablissements Caffier & Barreau Cast iron molds for glass making and method of making

Also Published As

Publication number Publication date
BR9200615A (en) 1993-08-24
ITMI930305A0 (en) 1993-02-18
ITMI930305A1 (en) 1994-08-18
DE4305027A1 (en) 1993-08-19
GB9303156D0 (en) 1993-03-31
GB2265154A (en) 1993-09-22

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960126